Honeywell HE420A - Manual (Page 7)

HE420A STEAM POWER HUMIDIFIER
7 68-0192—4
11. Reset the water level.
CAUTION
Flooding Hazard.
Inadequate support of the float arm can lead to
valve seat damage resulting in water leakage.
Support the float arm during adjustment.
a. Set the humidifier reservoir on a level surface.
b. Attach the water feed line and allow the unit to fill
until the float valve shuts off the incoming flow of
water. The water level should be between 2-1/4 in.
(57 mm) and 2-1/2 in. (64 mm) deep. If water level is
correct, go to step d.
c. Adjust the water level in small increments. Raise the
water level by pushing down on the center of the
float arm. Lower the water level by pressing the float
down with one hand and pulling up on the center of
the float arm with the other hand. See Fig. 6.
d. Verify the water level by removing enough water to
allow the float valve to automatically fill and shut off
the water.
12. Remount the humidifier.
13. Reconnect all plumbing connections.
14. Reconnect all electrical connections.
15. Verify humidifier operation by following the steps in the
Checkout Procedures section.
End of Humidification Season
Clean and shut off the humidifier at the end of the heating
season. Use the Every 1 To 4 Months section, steps 1 through
14, to shut down for the season.
IMPORTANT
Be sure the humidifier power is off and there is no
water in the humidifier.
Vacation
When you leave on vacation, turn off the humidifier water
supply and the humidity control. When you return, turn on the
humidifier water supply and reset the humidity control to restart
the humidifier.
CHECKOUT PROCEDURES
After winter start-up or maintenance, use the following
procedure to check humidifier operation:
1. Turn on the humidifier water supply.
2. Be sure the humidifier has power and plug in the humidifier.
3. Turn the Automatic Humidity Control to the Test position.
NOTE: If relative humidity is above 45% in the home, or the
outdoor temperature is above 50°F, a jumper may
need to be placed across the humidistat’s OUT termi-
nals to perform this checkout.
4. Check that the furnace blower turns on to circulate the
moist air. The blower may take as long as fifteen minutes
to turn on.
5. Reset the Automatic Humidity Control to the desired dial
setting for automatic operation.
TROUBLESHOOTING
Refer to Table 4 for troubleshooting procedures.
Table 4. Troubleshooting Procedures.
Problem What To Look For What To Do
Low humidity Humidifier heater is not operating. • Confirm that humidifier is plugged in.
• Set the humidistat higher.
• Check for low water level.
• Reset circuit breaker or check for blown fuse.
• Check that the furnace power is on.
• Check all external wiring connections.
• Check the humidity control setting.
• Call a professional heating contractor.
Rapid air changes. Drafts (cold air is dry
and is an added load for the humidifier).
• Keep doors and windows closed.
• Close fireplace damper when not in use.
• Keep exhaust fan running time to a minimum.
• Seal around doors and windows.
High humidity Condensation on walls. • Turn off humidity control and water until condensation is
completely evaporated.
Heavy condensation on windows. • Turn humidity control down low enough to eliminate
condensation caused by moisture from bathing, mopping,
cooking, etc. If moisture persists, more ventilation is
needed.